How about a scene where your wife tells you you have to strip down naked and do 20 pushups and 20 situps in less than two minutes, or she has sex with her boyfriend instead of you. Sounds easy enough. But to make it more "challenging", after you start she puts one foot on your back or chest, to make it almost impossible to complete your goal. You complain, but she says "What's wrong, not in good enough shape to do a few exercises?" As you almost complete your goal, she keeps pushing you down with her feet more and more. You fail. She wins. Too bad.
I like this because my wife has done something similar. A friend gave us this suggestion. I want to get her to video it one of these days, but if this is something you would like to do, I'd love to see this! I like the cuckold, femdom, and trample aspects of it. Not to mention I have a foot fetish.
